Quality assessment of raw materials in the Republic of Burundi for road concrete production

Studies were conducted on sand and crushed stone sourced from two rivers in the Republic of Burundi to assess their compliance with standard specifications and their suitability for producing cement-based road concrete. It was established that cement produced by the Burundian company BUCECO (BURUNDI CEMENT COMPANY) is only suitable for the construction of roadbed foundations; for pavement surfaces, the use of cement from Tanzania Portland Cement is recommended. The study found that the aggregate materials (sand and crushed stone) are suitable for the production of road concrete after preliminary processing. Key technological measures are proposed to ensure the required quality standards for Burundian road construction using local raw materials.